opt/clang/Pkgfile

# Description: LLVM + clang compiler
# URL:         http://llvm.org/
# Maintainer:  Thomas Penteker, tek at serverop dot de
# Depends on:  llvm

name=clang
version=10.0.0
release=1
source=(https://github.com/llvm/llvm-project/releases/download/llvmorg-$version/{llvm,clang}-$version.src.tar.xz)

build() {
  mv clang-$version.src llvm-$version.src/tools/clang

  cd llvm-$version.src
  mkdir build
  cd build

  cmake .. -G Ninja \
    -DLLVM_PARALLEL_COMPILE_JOBS="${JOBS:-1}" \
    -DLLVM_INCLUDE_EXAMPLES=0 \
    -DLLVM_INCLUDE_TESTS=0 \
    -DLLVM_ENABLE_FFI=1 \
    -DLLVM_ENABLE_RTTI=1 \
    -DLLVM_TARGETS_TO_BUILD='X86;AMDGPU;BPF' \
    -DCMAKE_BUILD_TYPE=Release \
    -DCMAKE_INSTALL_PREFIX=/usr \
    -DLLVM_APPEND_VC_REV=0 \
    -Wno-dev

  ninja
  DESTDIR=$PKG ninja install

  # only clang may be left, remove llvm
  rm -r $PKG/usr/include/llvm{,-c}
  rm -r $PKG/usr/lib/cmake/llvm
  rm -r $PKG/usr/share/opt-viewer
  rm $PKG/usr/bin/{bugpoint,ll*,opt,obj2yaml,sancov,sanstats,verify-uselistorder,yaml2obj,dsymutil}
  rm $PKG/usr/lib/{libLTO.*,libRemarks*,libLLVM*}

  mv $PKG/usr/libexec/{c++-analyzer,ccc-analyzer} $PKG/usr/lib/clang
  rmdir $PKG/usr/libexec
  sed -i 's|libexec|lib/clang|' $PKG/usr/bin/scan-build
}